Čertův hrádek, Natural monument in Rohozná, Czech Republic.

Čertův hrádek is a protected natural monument north of Rohozná u Jihlavy in the Jihlava district, managed by the Vysočina Regional Office. Its protection covers a fir-beech forest growing on rocky ground.

The rock formation received official protection status in 1984 to preserve its geological structures and the surrounding forest ecosystem. This designation recognized the site as an important element of the region's natural heritage.

The place gets its name from an old tale about a devil who tried to build a castle during the night. This story remains alive in local memory and shapes how people see the rock formation today.

The site is accessible via a marked trail system that winds through the forest and leads to the rock formation. Wear sturdy shoes as the paths can be uneven and muddy, especially after rain.

The protected area carries the name Čertův hrádek, "the Devil's little castle", and covers a fir-beech forest on a rocky base north of Rohozná. The Regional Office of the Vysočina Region manages it, and it is registered as site no. 826 in the Czech list of protected areas.